The gracilis is a long, slender muscle on the medial aspect of the thigh.
Origin (proximal attachment):
a. Inferior border of pubic body near symphysis.
Insertion (distal attachment):
a. Proximal medial surface of tibia (part of pes anserinus).
Actions of Gracilis on the thigh (femur):
a. Adducts thigh at hip. (It also flexes the leg at the knee and medially rotates leg when knee is flexed.)
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Nerve to muscle and its spinal segment:
Obturator nerve (L3, L4).